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without a needle
even the laptop with a narrow bezel will not be blocked
And the extremely smooth threads are very convenient for installation and disassembly even if it is closed for a long time
Read more High Quality Stereo Sound and Long Playtime Ultra-long Play Time Built-in improved lithium polymer 240mAh battery
uxcell LM6UU Linear Ball Bearings 6mm Bore 12mm OD 19mm Length for CNC Machine 3D Printer 4pcs cocoon without a needleuxcell LM6UU Linear Ball Bearings 6mm Bore 12mm OD 19mm Length for CNC Machine 3D Printer 4pcs Linear motion bearings provide freedom of movement in a single direction. Often used in conjunction with cylindrical shaft or rail. The steel ball is in point contact with the shaft and rotates with very little frictional resistance, so as to obtain smooth movement with high precision. Linear Ball Bearing Motion Slide Units Grease may be applied prior to use
